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He ratio of the lengths of the corresponding sides of two rectangles is 8:3. the area of the larger rectangle is 320 ft2. what is the area of the smaller rectangle? 120 ft2 30 ft2 90 ft2 45 ft2

Respuesta :

JonHenderson55
The answer is:  [A]:  " 120 ft² " .
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Explanation:
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Set up a ratio as a fraction:
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       8/3 = 320/x ;
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Cross-multiply:
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8x = 3 * 320  ;

8x = 960 ;

Divide each side of the equation by "8" ;
 to isolate "x" on one side of the equation ; and to solve for "x" ;
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   8x / 8  =  960 / 8 ;

to get:  x = 120 .

The answer is:  [A]:  " 120 ft² " .
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